Trigger release



T. ANDERSON March 10, 1936.

TRIGGER RELEASE Filed Nov. 50, 1952 ZSheets-Sheet 1 7790mm? Afl/Vdrs 027ATTORNEY March 10, 1936. T. L. ANDERSON 2,033,803

TRIGGER RELEASE Filed Nov. 30, 1952 2 Sheets-Sheet 2 Patented Mar. 10,1936 UNITED STATES PATENT OFFICE 2,033,803 TRIGGER RELEASE Thomas L.Anderson, Hannibal, Mo. Application November 30, 1932, Serial No.645,068 1 Claim. (or 42-69) This invention relates to a trigger releaseand more particularly to an attachment applicable to a shotgun or otherfirearm wherein it is desired to convert or reverse the trigger actionfor increasing the accuracy of a persons shot, and has for the primaryobject the provision of means for preventing the fiinching of a personaffecting the aim of a gun when fired, thus permitting more accuracy tobe had by a person when shooting at moving or non-moving targets orobjects.

Another object of this invention is the provision of a device of theabove stated character which may be easily and quickly applied to orremoved from a conventional type of gun, and which, when applied, willreverse the trigger action so that the gun fires on the release of thetrigger instead of on the pulling of the trigger. Thus the muscularcontraction of a person pulling the trigger will not affect the aim ofthe gun during the actual firing of said gun, the firing of the guntaking place during the relaxing of the muscular action of the person.

With these and other objects in view this invention consists in certainnovel features of construction, combination and arrangement of parts tobe hereinafter more fully described and claimed.

' For a complete understanding of my invention, reference is to be hadto the following description and accompanying drawings, in which Figure1 is a fragmentary vertical sectional view illustrating a portion of agun wherein the hammer is shown in firing position and with anattachment applied to the gun constructed in accordance with myinvention.

Figure 2 is a .similar view showing the hammer in cocked position andbeing held in said position by the sear of' the gun.

Figure 3 is a similar view showing the hammer held in a cocked positionafter the pulling of the trigger by an auxiliary sear or an attachmentforming the subject matter of the present invention.

Figure 4 is a similar view showing the hammer released from a cookedposition by the trigger of the gun being released.

Figure 5 is a fragmentary plan view showing the attachment applied tothe gun frame and the conventional sear carried by said frame.

Figure 6 is a perspective view illustrating an auxiliary sear formingpart of the present invention.

Referring in detail to the drawings, the numeral l indicates a portionof a gun frame in which is mounted the firing pin 2 actuated by a hammer3. The hammer 3 is of the conventional type and held in a cockedposition by a sear 4, the latter being actuated by. the movement of atrigger 5. In a gun of this type the hammer 3 is released by pulling onthe trigger 5 so that said hammer may strike the firing pin 2. A personwhen aiming the gun at a target or other object pulls the trigger 5 tofire the gun, and the pull upon the trigger brings about a muscularcontraction in the person having a tendency to distort or interfere withthe aim so that accuracy of the aim will be impaired, this conditionbeing commonly known as fiinching. To prevent fiinching or the impairingof the aim of the gun by the person, my invention is employed andconsists of an auxiliary sear 6, one end of which is pivoted to the gunframe, as shown at l, with the auxiliary sear extending alongside thehead 8 of the trigger 5 so that on pulling of the trigger 5 the head 8thereof will efiect movement of the auxiliary sear 6 prior to efiectingmovement of the main sear 4. The free end of the auxiliary sear 6 isformed with an enlargement 9 provided with a notch In in its upper sideto receive a tension spring II, the latter being secured to the gunframe I, as shown at l2, and overlying the trigger head. Formedintegrally with the pivoted end of the auxiliary sear 6 is a dog l3arranged at right angles with the auxiliary sear and lying in the pathof movement of the hammer 3 when the latter is moved from firingposition to a cooked position. When my invention is applied to a gun,the hammer 3 is provided with a notch Hi. The movement of the hammerinto a cooked position places the notch [4, in the path of movement ofthe notched end of the dog l3 so that a pull made on the trigger movesthe notched end of the dog into the notch of the hammer prior to thetrigger head 8 engaging and moving the main sear 4. After the notchedend of the dog [3 has entered the notch [4 of the hammer the triggerhead rocks the main sear 4 disengaging the latter from the hammer,however, the hammer remaining in a substantially full cocked position bythe auxiliary sear. To fire the gun, the trigger is released and thespring ll forces the auxiliary sear 6 into a pivotal movement freeingthe dog I3 from the notch I4, thus permitting the hammer 3 under itsconventional propulsion means to strike the firing pin to discharge thecartridge of the gun,

An attachment constructed in accordance with the foregoing and whenapplied to the gun will eliminate flinching or the interrupting of theaim of the gun by a person due to muscular contraction of the personwhen pulling the trigger. The firing of the gun takes place on therelease of the trigger wherein the muscles of the person relax and donot afiect the aim, thereby permitting more accuracy to be obtained inshooting. An attachment of this character may be easily and quicklyapplied to a conventional type of gun and when it is desired to returnthe gun to a conventional trigger action the attachment may be removed.

While I have shown and described the preferred embodiment of myinvention, it will be understood that minor changes in construction,combination and arrangement of parts may be made without departing fromthe spirit and scope of my invention, as claimed.

Having described the invention, I claim:

A gun construction comprising a frame, a spring-pressed hammer pivotedto the frame for actuating a firing pin, a trigger head pivoted to theframe, a trigger carried by said head to impart pivotal movement to thelatter, a springpressed main sear pivoted to the frame for holding thehammer in cocked position and engageable by the head after a certainmovement of the trigger to release the hammer from said cocked position,a substantially L-shaped auxiliary sear pivoted to the frame with oneportion thereof resting on the head and the other portion extending atright angles to the main sear and shouldered 10 to engage with thehammer during initial movement of the trigger for allowing a limitedmovement of the hammer from a full cocked position when released by themain scar, and a spring secured to the frame and engaging the auxiliary15 sear to disengage the latter from the hammer during the releasing ofthe trigger to permit striking of the firing pin by said hammer.

THOMAS L. ANDERSON.

